So, have you installed Internet Explorer 9 yet on your Windows machine? No? Well, feel assured in the knowledge that at MIX11 today, Microsoft announced Internet Explorer 10, while also pushing out the very first preview release. Also, IE10 (can I call it IEX? Can I? Can I?) was demonstrated running on Windows for ARM.

They also have the advantage to target solely DirectX, while others are multi-plarform.

Advantage? IMNSHO, that depends on viewpoint. If you are joined at the hip to Windows, this might be a boon, but not if you are on a non-MS platform. As long as MS is not going to think multi-platform, IE is not going to be on my radar, no matter how good that browser gets.

Opera is working on cross-platform (openGL) hardware acceleration, but it's not available in the stable version yet. There was one webgl-enabled build available for Windows: http://labs.opera.com/news/2011/02/28/